FlowCon SH Externally Adjustable Dynamic Self Balancing Valve The FlowCon SH series of valves are dynamic flow controls which automatically limit the rate of flow to a pre-set, adjustable maximum. Used as automatic/dynamic hydraulic balancing valves in multi circuit HVAC systems the more common applications include multiple fan coils, radiators and heat pumps. They can also be used in limiting the flow to individual heat exchangers or domestic water tanks. Due to the fact that the FlowCon SH valves are externally adjustable, the desired maximum flow rate can be easily changed while the system is operating. Features and Benefits - Automatic flow control, balance is achieved automatically eliminating the need for manual balancing devices. - Easy flow rate setting selection, determined by one flow rate table without the need of external measurements. - Easy adjustment without disturbing the balance in the rest of the system. - 51 distinct flow rate settings per valve size and control range. - Accuracy: Greatest of either ±5% of controlled flow rate or ±2% of maximum flow rate. - Tamper-proof, adjustment unit is being operated by means of special FlowCon key. - Pressure/temperature measurement plugs available for verifying operating pressure differential range. - Double union end connection with a wide selection of end fittings, or double flange connection for ease of installation. Adjustment The internal mechanism is adjusted by an operation key which also turns the display mechanism. The numeric display shows two scales; one black reflecting full turns numbered 1 through 6, and one red reflecting tenths of full turns numbered 0 through 9. The number of turns reflects the flow rate selected (pls. see specific tech note for exact flow rates and settings). After the flow rate is set, the valve automatically registers the system pressure conditions and adjusts its orifice area to limit the flow rate to the selected maximum. As system pressure conditions change, the valve will automatically adjust to maintain the selected flow rate. This eliminates the need to know exactly the distribution of pressure within a system. Because of this dynamic reacting feature, one or more of the valves in the system can be re-adjusted without upsetting the other circuits. The flow rate through the valve can be verified by reading the pressure differential across the valve. The pressure test ports can be supplied with optional pressure/temperature test plugs for connecting conventional mechanical gauges or electronic sensors.
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